Automatic lock slider



Jan. 7, 1941.'

l L. H. MORIN AUTOMATIC LOCK SLIDER Filed Jan. 7, 1939 ATTORNEY Patented Jan. 7, 1941 l A I UNITED -s'rATEsrATE-NT oFElcE AUTOMATIC LOCK SLIDER Louis H. Morin, Bronx, N. Y., assignor to Whitehall Patents Corporation, Bronx, N. Y., a corporation of New York Application January 7, 1939, Serial No. 249,745

12 Claims. (Cl. 24-205. 5)

This invention relates to the sliders of vsepavided with an aperture I8 which opens intothe rable slide fasteners employing stringers adaptrecess I6. I ed to be coupled and uncoupled in the movement At I9 is shown a part of a finger piece orl puIl, of a slider longitudinally of the stringers. More primarily the pivot end portion thereof. This particularly, the invention relates to an-autoend portion terminates at its free end in two 5 matic locking slider; that is to say, a slider hav- -cylindrical side bearings 20, joined by an arcing locking means which is automatically moved shaped hood portion 2| which forms between the into and retained in operative position in rebearings a chamber 22 for the reception of a coil taining the slider against accidental movement spring 23. The spring 23 is arranged around the 10 longitudinally of the stringers and whereby the coupling or pivot pin 24 or that part thereof 10 movement of the finger piece or pull against the which is disposed in the chamber 22. The pin action of tensional means employed will operate passes lthrough apertures 20a formed in the bearto move the lock element into raised inoperative ings 20 and also extends into the lugs I5 and may .position permitting free movement of the slider be riveted or otherwise secured in position to longitudinally of the stringers. The novel feaform a pivotal'coupling of the pull I9 with the 18 tures of the invention will be bestlunderstood slider. One end 23a of the spring extends in'to from the following description and annexed an aperture or socket 25 in the pull I9, the latter drawing in which certain embodiments of the yopening into the chamber 22; and the other end invention are disclosed, and in which the sepa- 23h of the spring extends into the aperture I8 rate parts are designated by suitable reference in the pull. `The arrangement of the spring ends 2@ characters in each of the views, and in which: and Winding of lthe spring issuch-as to place the Fig. 1 is a face view of a part of a fastener pull I9 under tension so as to retain the pull with the slider arranged thereon with parts of normally in an operative position; that is to say,

the construction broken away. in abutting engagement withthe top wall I4 of 25 Fig. 2 is a partial'section on the line 2-2 of the slider. In other words, the upward swing- 25 Fig, 1 ing movement of the pull on the pivot 24 will Fig. 3 is a bottom plan view of the pivot end be against the tension of the spring 23. of a pull which is employed, detached and with In the construction shown in Figs. l and 2 part in section; and, of the drawing, the finger piece is provided with Fig. 4 is a view similar to Fig. 2 showing a adownwardly projecting lock pin or pawl 26 ar- 30 modification. ranged in registering alinement with the..aperj L In Fig. 1 of the drawing is shown at I0, Illa, ture I'I so that when the linger piece is in its the stringers of a separable fastener having counormal position, the end ofthe pin or pawl 26 pling links II arranged thereon, and at I2 is shown extends into the channel of the slider to vengage a slider movable longitudinally of the stringers at least one of the Stringer links to retain the 35 to couple and uncouple the same. The body slider against accidental movement longitudiportion of the slider is of more or less convennally of the stringers. At this time it is well to tional form except as more specifically hereinpoint out that one of the distinctive features of after defined. By general conventional form it the invention resides in the provision of the tenis meant that the slider consists of a channeled sional means which normally supports the cou- 40 body having top and bottom walls joined cenpling pin or pawl of the pull in operative posiv trally of one end in a connecting web, part of tion. While it is possible under excessive stressesI which is seen atl I3 in Fig. 2 of the drawing, and strains to disengage the pawl from one link which web divides the body into diverging chanto move the sliders longitudinally of the stringere,

nels at the wide end portion thereof. the pawl will, nevertheless, be immediately moved45 The upper wall I4 of the slider is provided with into further locking engagement producing a detransverselyrspaced upwardly projecting lugs I5, cided ratchet effect. This operation is distinctly the outer surfaces of which 'are preferably different from the more conventional type of pin rounded as clearly seen in Fig. 1 of the drawing, lock where it is commonly experienced that when and intermediate the lugs l5, the outer surface the pin once becomes accidentally disengaged, it 50 of the wall I4 is recessed as seen at I6. The will stay disengaged for the full period of a given vwall I4 is also provided with an elongated aperstress or strain. ture I1 adjacent one of the bearing lugs I5, and With the present construction, it will appear this aperture also opens into the recess I6 as that the coil spring 23 is used` within and conwill be apparent. The wall I4 is further procealed by the hood portion 2I. This hood por- 55 tion is free to extend around the spring and to enter vthe chamber 22 in the upward. swinging movement of the finger piece i9 as will readily appear from a consideration of Fig.'2 of the drawing. Suiiicient clearance is provided to com-1 pensate for raising the pull suiiiciently to operate the slider in both directions on the Stringer.

In addition to the concealment of the spring, which produces a neat and finished appearance of the complete pull, it will also appear that a very simple assemblage job is provided; that is to say, the spring is first mounted in the socket portion housed by the hood 2i of the pull with the end 23a mounted in the aperture 25, and with the end 24 extending downwardly. As a matter of fact, before the tension is taken up, the end 23h will extend somewhat inthe direction of the end 23a but will protrude through the bottom of the pull. The parts thus assembled will readily be placed upon the slider by inserting the spring end 23h into the aperture i8, then moving the pull in the direction of the contracted end of the slider, placing the spring 23 under tension in this operation, and bringing the apertures 20a in alinement with the correspond- `ing apertures in the lugs l5, and then placing the pin 24 in position.

In Fig. 4 of the drawing is shown a slight modification of the construction shown in Figs. 1 and 2 Wherein- I` have substituted for the pull i9, a pull I9a which differs from the pull l@ solelyl in being provided with an independent `loci: pin or pawl element 27 which is preferably made independent ofthe pull |9a and secured thereto; whereas in the structure shown in Figs. 1 and 2, the pin or pawl 26 is formed integrally with the pull, the entire structure being in the form of a die casting.

The structure in Fig. 4 is adapted primarily for use in such instances where the pull lemas well as the slider IZa, are composed of thermoplastic materials, such for example as cellulose acetate, or in fact, or any of the plastics; and further where the slider is arranged upon correspondingly formed stringers. In such instances, the lock pin or pawl 2l may be composed of metal or other hard wearing material which will not besubject to breakage. It will also appear that the .pin or pull 2'! is located slightly beyond the pivot 24a of the pull and operates in an aperture Ha correspondingly arranged in the slider. Otherwise the structure shown in Fig. 4 is substantially the same as that shown in Fig. 2, the hood of the pull being shown at 2 Iaand the recess in the slider being shown at Hirt.

In view of the disclosure, it will appear that one of the features ofthe invention resides in the and kinds.

provision of a housing at the pivot end of the pull and. formed by what is termed a hood portion,

and in arranging in this housing resilient means,

such for example as the spring, so acting upon. the pull as to normally support the pull upon the outer surface of the slider and retain the same against accidental displacement. While this construction is applied to what is commonly termed a lock slider, it will, of course, beapparent that the lock element need not necessarily be employed, except where this feature is desirable. further be understood that the illustrations in the accompanying drawing are simply to show. certain adaptations ofthe inventiombut the invention is applicable to sliders of "varioustypes It wili be apparent that vthe pull may be so mounted and the sliderl. so constructed -as to normally support the pull at the wide end portion of the slider, especially in adapting the It will aaaaiee fastener to be used in conjunction with leggings, or to other adaptations lwhere the so-called reverse lock slider is employed.

Having fullydesoribed my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A lock slider for separable fasteners of the character described, said slider comprising a channeled body, a pull pivotally supportedupon one outer wall of the slider, said pull having adjacent the pivot thereof a projecting lock element adapted to protrude through one wall of the slider to extend into the channel thereof when the pull is arranged in horizontal position upon the sii'der wall, and a spring housed;l within the pivot end of the pull and cooperating with the slider and pull to normally support the pull in tensional engagement with the wall of the slider to maintain the lock element in operative position.

2. A. lock slider for separable fastener stringers of the class described, said slider comprising a channeled body having a pair of projecting lugs on one wall thereof, a pull, means pivoting one end portion of the pull in said lugs, said pull having a projecting lock element adapted to normally extend into the channel of the slider, a coil spring arranged within the pivot end portion of the pull with one end portion of the spring engaging the slider and the other end portion thereof engaging said pull the spring being under tension to normally support the pull in a position projecting the lock element thereof into the channel of the slider whereby the movement of the pull to withdraw the lock element from the channel of the slider will increase the tension upon said spring.

3. In separable fasteners employing stringers and a slider movable along the stringers to couple and uncouple the same, the slider having means for pivotally supporting a pull in connection therewith, a pull having at the pivot end portion thereof, a curved hood forming a chamber within said pull, a coil spring arranged within said chamber with one end of the spring engaging said pull and the other end thereof engaging the slider to normally and tensionally support thel body, portion of the pull upon the upper surface of the slider, and the pivot end portion of' the pull having a projecting lock element engaging one of the stringers in the normal position of said pull.

4. A pull for sliders of separable fastener stringers, one end portion of the pull having means receiving a pivot pin for pivoting the pull to a slider, a substantially semi-circular hood portion at the pivot end of the pull and extending around the pivot axis thereof, the hood being disposed upon the outer surface of the pull, the inner surface of the pull having a. projecting latch element, a coil spring arranged within the hood portion of the pull and concealed by said hood portion, said spring engaging the pull to normally support the latch element thereof in operativ position.

5. A slider of the class describedhaving on one outer wall thereof spaced Yapertured lugs, a pull, one end portion of which is provided at eachi side thereof with cylindrical apertured bearings, a pivot pin passed through the lugs and the bearings of said pull to pivot. the pull in connection with said'slider, a curved hood portion on the pull intermediate said bearings forming a chamber around said pin within said hood portion, a coil spring arranged in said chamber with one end of' gegane of the pull in substantially parallel relation to the outer wall of said slider.

6. A slider of the class described having on one outer wall thereof spaced apertured lugs, a pull, one end portion of which is provided at each side thereof with cylindrical apertured bearings, a pivot pin passed through the lugs and the bearings of said pull to, pivot the pull in connection with said slider, a curved hood portion on the pull intermediate said bearings forming a chamber around said pin Within said hood portion, a coil spring arranged in said chamber with one end of the spring engaging the slider and the other end thereof engaging the v pull, the spring tension being such as to normally'support the body portion of the pull in substantially parallel relation to the outer wall oi' said slider, and the outer wall of the slider intermediate said lugs being recessed to receive the bearings and hood portion of said pull in the swinging movement of the pull on the slider. y

7. A slider of the class described having on one outer wall thereof spaced apertured lugs,l a pull, one end portion of which is provided at each side thereof with cylindrical apertured bearings, a pivot .pin passed through the lugs and the bearings of said pull to pivot the pull in connection with said slider, a curved hood portion on the pull intermediate said bearings forming a chamber around said pin within said hood portion, a coil spring arranged in said chamber with one' end of the spring engaging the slider and the other end thereof engaging the pull, the spring tension being such as to normally support the body portion of thepull in substantially parallel relation to the outer wall of said slider, the outer wall of the slider intermediate said lugs being recessed to receive the bearings and hood portionof said pull in the swinging movement of the pull on the slider, the outer surface of the hood being in alinement with the outer surfaces of said bearings to form a substantially cylindrical end prtion at the pivot end of the pull, and said pivot end of the pull having a projecting lock 'element adapted to extend into y.the slider in retaining the slider in operative position tend through the aperture in said wall into the slider when the pull is supported in engagement with said wall.

9. A slider of 'the class described comprising spaced walls joined by a connecting web at one end, a pull, one wall of the slider having on the outer surface thereof a pull pivot, a pin pivoting one en'd of the pull to said pull pivot, a coil spring arranged upon said pin with the ends of said spring engaging the slider and the pull to normally support the pull in tensional engagement with said wall of the slider whereby in releasing the pull when manually supported in-raised po-l sition with respect to'said wall, the spring will automatically return the pull to engagement with said wall.

10. A lock slider for separable fasteners of the character described, said slider comprising a channeled body having spaced walls joined by a connecting web at one end, a member pivotally supported in connection with one wall of the slider, said member-having a projecting lock element adapted to protrude-through .one wall of the slider to extend into the channel thereof, a coil spring arranged upon the pivot of said member, said spring tensionally engaging the member to normally support the lock element within the channel of said slider, and said member being adapted to be manually raised against the tension of said spring to move the lock element out of the channel of the slider in the operation of said slider.

having a projecting pin member adapted to exv 1l. In separable fastener stringers, a slider, a

pull, means at one end of the pull and on said slider pivotally coupling the pull in connection therewith, said end portion of the pull having a -curved' hood forming a chamber within said pull, a spring arranged within the hood and concealed thereby, and said spring having portions pivot end of 4said body, spaced apertured pivot pin bearings within said hood portion adapting the pull for pivotal mounting in connection with a slider, and the hood portion of the pull intermediate said bearings formingv a chamber of materially greater diameter than the diameter of the apertures in said bearings to limit frictional engagement of the pivot end of the pull with the apertured bearing portions only thereof.

Louis H. MORIN. 

